Electric Field

Electric Field

1. Direct Interaction vs Mediated Interaction

   • gravitational field produces a force that interacts with the gravitational field of other celestial bodies. This interaction will produce a force of attraction or repulsion.
   • • If the force over a test charge +q0 is of repulsion, then the force points into the direction of the electric field .
     • If the force over a test charge -q0 is of repulsion, then the force points into the opposite direction of the electric field .

2. Electric Field Lines

   • field lines provide a graphic representation of electric fields
     • positive charge will go outwards
     • negative charge will go inwards
     • The intensity of an electric field is related to the density of field lines

3. Electric Field Superposition Principle

   • The electric field superposition principle states that the electric field of any charge combination is the vector sum of the fields produced by individual charges

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